% 测试 fir1 函数
clear; close all; clc;
addpath([matlabroot, '/toolbox/signal/signal']);

n = 10;
lowCutOff = 0.1;
a = [lowCutOff];
b = fir1(n, a);
H = freqz(b);



a = [0, 0.2, 0.4, 1];
b = fir1(n, a);

